Bases para la especificación reológica para concretos autocompactantes con arenas de distinto origen

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dc.contributor.advisorLizarazo Marriaga, Juan Manuelspa
dc.contributor.authorAndrade Martínez, William Javierspa
dc.date.accessioned2021-06-24T18:04:16Z
dc.date.available2021-06-24T18:04:16Z
dc.date.issued2021
dc.descriptionilustraciones, diagramas, fotografíasspa
dc.description.abstractEsta investigación tuvo como propósito establecer las bases para la especificación reológica de concretos autocompactantes (CAC), con materiales locales. Lo anterior se logró partiendo del análisis de 33 mezclas de concreto autocompactante elaboradas con 3 tipos de arena (La Sierra, Nacionales y Goliat) de uso comercial en Colombia. Se analizaron propiedades en estado fresco como temperatura, contenido de aire, densidad, flujo libre, bloqueo con Anillo J, capacidad de llenado a través de embudo V, capacidad de paso a través de Caja en L, esfuerzo de fluencia con reómetro ICAR y con Veleta Portátil, viscosidad plástica y en estado endurecido resistencia a compresión a 28 días. También se analizó la influencia del tiempo y la variación de la arena sobre las propiedades reológicas del CAC. Se establecieron correlaciones entre algunas propiedades, se determinó la tixotropía del CAC con cada arena y se evaluó la trabajabilidad mediante metodología estadística ANOVA, cajas simultáneas y la interpretación del coeficiente de correlación de Pearson. Al finalizar se presenta el análisis de la estabilidad estática mediante la interpretación gráfica de la resistencia del concreto a la segregación, la capacidad de paso y la velocidad de exudación. Esta investigación aportó la base metodológica para evaluar los concretos autocompactantes con materiales locales teniendo en cuenta el comportamiento y las correlaciones más relevantes e influyentes de las propiedades reológicas. (Texto tomado de la fuente).spa
dc.description.abstractThe purpose of the investigation was to establish the bases for the rheological specification of self-compacting concrete (SCC) with local materials. This study was based on the analysis of 33 SCC concrete mixtures made with 3 types of sands (La Sierra, Nacionales and Goliath) used in the commercial sector in Colombia. The properties in the fresh state were analyzed by temperature, air content, density, Slump flow, flow and blocking with J-Ring, filling ability with V-funnel, passing ability with L-Box test, ICAR Yield Stress, Potable vane Yield Stress, Bingham plastic viscosity and for hardened state was used strength test at 28 days. Also, the influence of time and the variation of the sand on the rheological properties of CAC was considered. The correlations were established between some properties, the thixotropy of the CAC with each sand was determined and the workability was evaluated by means of the statistical methodology ANOVA, simultaneous boxes and the interpretation of the Pearson correlation coefficient. At the end, the analysis of the static stability is presented through of graphic interpretation of the resistance of the concrete to segregation, passing ability, bleeding. This investigation provided the methodological basis for evaluating self-compacting concretes with local materials, taking into account the behavior and the most relevant and influential correlations of rheological properties.eng
dc.description.curricularareaArquitectura y Urbanismospa
dc.description.degreelevelMaestríaspa
dc.description.degreenameMagíster en Construcciónspa
dc.description.researchareaMaterialesspa
dc.format.extentxviii, 333 páginasspa
dc.format.mimetypeapplication/pdfspa
dc.identifier.instnameUniversidad Nacional de Colombiaspa
dc.identifier.reponameRepositorio Institucional Universidad Nacional de Colombiaspa
dc.identifier.repourlhttps://repositorio.unal.edu.co/spa
dc.identifier.urihttps://repositorio.unal.edu.co/handle/unal/79711
dc.language.isospaspa
dc.publisherUniversidad Nacional de Colombiaspa
dc.publisher.branchUniversidad Nacional de Colombia - Sede Bogotáspa
dc.publisher.departmentEscuela de Arquitectura y Urbanismospa
dc.publisher.facultyFacultad de Artesspa
dc.publisher.placeBogotá, Colombiaspa
dc.publisher.programBogotá - Artes - Maestría en Construcciónspa
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dc.rights.accessrightsinfo:eu-repo/semantics/openAccessspa
dc.rights.licenseAtribución-NoComercial-SinDerivadas 4.0 Internacionalspa
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/spa
dc.subject.ddc690 - Construcción de edificios::691 - Materiales de construcciónspa
dc.subject.lembConcreteeng
dc.subject.lembHormigónspa
dc.subject.lembAggregateseng
dc.subject.lembAgregadosspa
dc.subject.lembFluidseng
dc.subject.lembFluidosspa
dc.subject.proposalReologíaspa
dc.subject.proposalTixotropíaspa
dc.subject.proposalTrabajabilidadspa
dc.subject.proposalBinghamspa
dc.subject.proposalEsfuerzo de fluenciaspa
dc.subject.proposalViscosidadspa
dc.subject.proposalVeleta portátilspa
dc.subject.proposalConcreto autocompactantespa
dc.subject.proposalRheologyeng
dc.subject.proposalThixotropyeng
dc.subject.proposalWorkabilityeng
dc.subject.proposalYield Streeseng
dc.subject.proposalViscosityeng
dc.subject.proposalPortable vaneeng
dc.subject.proposalSCCeng
dc.subject.proposalSelf compacting concreteeng
dc.subject.unescoMateriales de construcciónspa
dc.subject.unescoBuilding materialseng
dc.subject.unescoTecnología de materialesspa
dc.subject.unescoMaterials engineeringeng
dc.subject.unescoRoca sedimentariaspa
dc.subject.unescoSedimentary rockseng
dc.titleBases para la especificación reológica para concretos autocompactantes con arenas de distinto origenspa
dc.title.translatedBases for the rheological specification for self compacting concretes with sands of different origineng
dc.typeTrabajo de grado - Maestríaspa
dc.type.coarhttp://purl.org/coar/resource_type/c_bdccspa
dc.type.coarversionhttp://purl.org/coar/version/c_ab4af688f83e57aaspa
dc.type.contentTextspa
dc.type.driverinfo:eu-repo/semantics/masterThesisspa
dc.type.redcolhttp://purl.org/redcol/resource_type/TMspa
dc.type.versioninfo:eu-repo/semantics/acceptedVersionspa
dcterms.audienceGeneralspa
dcterms.audience.professionaldevelopmentInvestigadoresspa
dcterms.audience.professionaldevelopmentEstudiantesspa
dcterms.audience.professionaldevelopmentPúblico generalspa
oaire.accessrightshttp://purl.org/coar/access_right/c_abf2spa

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